This FAQ is to help explain the Update List feature within the Sophocles Mail Manager .

What is Update List for ?

Update List is a List Maintainer feature that allows
list information to be updated for lists that they are a maintainer of.

How do I access the Update List function ?

Select the List Name from any screen displaying a link containing the
name of the person. An entry screen similar to that of the Create List
Function is presented to maintainer to allow modifications to the List
name and description as well as the access controls.
Some mail-lists
are used to control areas of the web-site. If you are unsure as to
whether a new or updated mail list should be set to "Email and Web" or
"Email only", select "Email only", and then send a note to
webmaster@opengroup.org to request clarification.

What do the control fields mean in the Update List screen ?

They has the same meaning as that of the Create List function.
See the Create List FAQ.